Evaluation of an enhanced pulse oximeter auditory display: a simulaion study.
Br J Anaesth
; 125(5): 826-834, 2020 11.
Article
en En
| MEDLINE
| ID: mdl-32682554
ABSTRACT
BACKGROUND:
We compared anaesthetists' ability to identify haemoglobin oxygen saturation (SpO2) levels using two auditory displays one based on a standard pulse oximeter display (varying pitch plus alarm) and the other enhanced with additional sound properties (varying pitch plus tremolo and acoustic brightness) to differentiate SpO2 ranges.METHODS:
In a counter-balanced crossover study in a simulator, 20 experienced anaesthetists supervised a junior colleague (an actor) managing two airway surgery scenarios once while using the enhanced auditory display and once while using a standard auditory display. Participants were distracted with other tasks such as paperwork and workplace interruptions, but were required to identify when SpO2 transitioned between pre-set ranges (target, low, critical) and when other vital signs transitioned out of a target range. They also identified the range once a transition had occurred. Visual displays were available for all monitored vital signs, but the numerical value for SpO2 was excluded.RESULTS:
Participants were more accurate and faster at detecting transitions to and from the target SpO2 range when using the enhanced display (100.0%, 3.3 s) than when using the standard display plus alarm (73.2%, 27.4 s) (P<0.001 and P=0.004, respectively). They were also more accurate at identifying the SpO2 range once a transition had occurred when using the enhanced display (100.0%) than when using the standard display plus alarm (57.1%; P<0.001).CONCLUSIONS:
The enhanced auditory display helps anaesthetists judge SpO2 levels more effectively than current auditory displays and may facilitate 'eyes-free' monitoring.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Presentación de Datos
/
Oximetría
Tipo de estudio:
Clinical_trials
Límite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Br J Anaesth
Año:
2020
Tipo del documento:
Article